International Journal of Physics
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International Journal of Physics. 2015, 3(3), 126-132
DOI: 10.12691/ijp-3-3-6
Open AccessArticle

Natural Radioactivity in Soil Samples in Nineveh Province and the Associated Radiation Hazards

Laith A. Najam1, , Shaher A. Younis1 and Fouzey H. Kithah2

1Physics Department, College of Science, Mosul Univ., Mosul, IRAQ

2Ministry of Science and Technology, Baghdad, IRAQ

Pub. Date: April 15, 2015

Cite this paper:
Laith A. Najam, Shaher A. Younis and Fouzey H. Kithah. Natural Radioactivity in Soil Samples in Nineveh Province and the Associated Radiation Hazards. International Journal of Physics. 2015; 3(3):126-132. doi: 10.12691/ijp-3-3-6


The natural radioactivity due to presence of 226Ra, 232Th and 40K in soil of Nineveh zone, Nineveh province, Iraq were measured by using gamma-ray spectrometry based on high-purity germanium detector. The specific activity of soil samples ranged from 16.21 to 38.83 Bq/kg with an average of value of 32.52±6.48 Bq/kg, 8.53 to 28.37 Bq/kg with an average of 20.30±5.36 Bq/kg, 236.03 to 613.11 Bq/kg with an average of 378.93± 123.29Bq/kg, and 2.18 to 17.92 Bq/kg with an average of 8.17± 5.55 Bq/kg for 226Ra, 232Th, 40K and 137Cs respectively. The study also examine some radiation hazard indices such as Radium equivalent activity (Raeq), Absorbed gamma dose rate (D), External hazard index (Hex), Internal hazard index (Hin) and gamma index (Iγ). These calculated hazard indices to estimate the potential radiological health risk in soil. The radium equivalent activity average (Raeq) was less than the permitted value (370 Bq/kg). The average absorbed dose rate value also less than the permissible limit of 55 nGy/h. The external hazard index, internal hazard index and gamma index of soil samples were less than unity.

soil radioactivity high-purity germanium detector absorbed dose rate activity concentrations external hazard index

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